US7124779B2 - Device for fastening a manoeuvrable plug for plugging of pipes - Google Patents

Device for fastening a manoeuvrable plug for plugging of pipes Download PDF

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Publication number
US7124779B2
US7124779B2 US10/518,763 US51876304A US7124779B2 US 7124779 B2 US7124779 B2 US 7124779B2 US 51876304 A US51876304 A US 51876304A US 7124779 B2 US7124779 B2 US 7124779B2
Authority
US
United States
Prior art keywords
sliding surface
plug
force ring
slip
slips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US10/518,763
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English (en)
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US20050263200A1 (en
Inventor
Harad Syse
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TDW Offshore Services AS
Original Assignee
Plugging Specialists International ASA
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Filing date
Publication date
Application filed by Plugging Specialists International ASA filed Critical Plugging Specialists International ASA
Assigned to PLUGGING SPECIALISTS INTERNATIONAL ASA reassignment PLUGGING SPECIALISTS INTERNATIONAL ASA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SYSE, HARALD
Publication of US20050263200A1 publication Critical patent/US20050263200A1/en
Assigned to TDW OFFSHORE SERVICES AS reassignment TDW OFFSHORE SERVICES AS CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: PLUGGING SPECIALISTS INTERNATIONAL AS
Application granted granted Critical
Publication of US7124779B2 publication Critical patent/US7124779B2/en
Assigned to JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE ASSISTANT reassignment JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE ASSISTANT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TDW OFFSHORE SERVICES AS
Assigned to TDW OFFSHORE SERVICES AS reassignment TDW OFFSHORE SERVICES AS RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: JPMORGAN CHASE BANK, N.A.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • F16L55/136—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • F16L55/1283—Plugging pig

Definitions

  • This invention regards a device for fastening a manoeuvrable plug for plugging of pipes, specified more particularly as lock slips with a stepped sliding surface.
  • prior art comprises fixed valves that are closed and opened on demand.
  • valves constitute a significant increase in costs when constructing the piping system. To some extent it is difficult to predict where to position the valves in order to allow the piping system to be shut down in the correct place. Consequently there is a risk that the use of valves will be excessive, or that the valves will be positioned in the wrong place. Excessive use of valves results in unnecessary capital costs, and the wrong placement leads to complications and additional work in connection with shut down of the piping system.
  • a valve that is left unused for a long period will also carry a risk of malfunction when it is put to use.
  • a valve represents a throttling of the piping system. This results in pressure loss, wear on the pipe due to cavitation etc., and problems connected with inspection equipment passing through valve openings.
  • Valves have to a large extent been replaced by plugs that are positioned and locked in the piping system by use of various means.
  • a plug is normally propelled through the pipe by the medium that normally flows in the piping system.
  • a plug In its simplest operating form a plug is operated by use of a direct connection between the plug and the control system. Cables, wires and hoses are pulled along into the piping system, so as to allow the plug to be locked upon reaching the correct position.
  • a wireless-operated plug carries with it all power sources for operation of internal cylinders, valves, radio systems etc. by containing batteries, hydraulic oil, propellant gases and similar.
  • the control signals are transmitted from the control system to the plug.
  • a plug is typically constructed with one or more sections. In a main section, which is to form the seal in the pipe, a number of concentric components are assembled. An end plate combined with a peripheral gasket constitutes the actual sealing element. Peripherally positioned slips fasten the plug against the pipe walls when the slips are forced outwards by an axially positioned hydraulic cylinder and co-operating, sloping slide and pressure faces. The piston rod of the cylinder is coupled to one end plate of the plug. In the plug there are devices that among other things operate the hydraulic cylinder.
  • main section Connected to the main section there may be several control sections containing recording and operating equipment for positioning etc. Several main sections may also be interconnected together in order to achieve the desired effect. Interconnection is achieved by coupling articulated stays to the centre of the end face of a section.
  • Plugs of a small diameter must be able to pass through pipe bends with a smaller turning radius than plugs of a larger diameter. Consequently, it is important that a small diameter plug can be manufactured with a small structural length. With currently known techniques, it is difficult to produce a plug with sufficiently short structural dimensions.
  • the object of the invention is to remedy the disadvantages of known techniques.
  • the slips that are placed peripherally on the main section of a plug are positioned with their highest ends abutting a sloping pressure face on one end plate of the plug.
  • the slips abut a conical force ring and are held against the force ring by means of e.g. tension springs.
  • the sliding surface between the slip and the force ring is formed with two gradients, by a first section of the sliding surface having a steep gradient and the second section a lesser gradient, typically 17 degrees.
  • the different gradients of the sliding surfaces form a stepped pattern.
  • the stepped pattern of the slips and the force ring correspond when the slips are in the starting position.
  • the sliding surfaces comprise one or more recesses in order to achieve an increased stability of the slips in the starting position, during the sliding motion and in the locked position.
  • the slips When the cylinder of the plug pushes the end plates of the plug together, the slips will, as a result of the steeply ascending sliding surfaces and the insignificant radial load on the slips during the first stage of the displacement, jump up onto the higher step in order to then move along the sliding surfaces with a lesser gradient. This makes it possible to achieve, in the first stage of movement, a large displacement of the slips in the radial direction with a small axial displacement.
  • the length of the slip may be reduced considerably and the structural length of the plug reduced correspondingly, such as is desirable for small diameter plugs.
  • FIG. 1 shows a section through the main section of a plug
  • FIG. 2 shows, on a larger scale, a section through a slip in the position of rest on a corresponding force ring
  • FIG. 3 shows, on the same scale, a slip forced out against a pipe wall.
  • reference number 1 denotes a main section equipped with a first end plate 3 , into which a hydraulic cylinder 5 has been integrated.
  • the hydraulic cylinder 5 comprises a piston 7 and a piston rod 9 .
  • One end 11 of the piston rod is connected to the second end plate 13 of the plug.
  • a hydraulic pump (not shown) and valves (not shown).
  • the underside of the slip 15 comprises a slip front 20 and a sliding surface 21 , 21 ′.
  • the sliding surface 21 , 21 ′ is divided by a slip recess 22 extending in parallel with the slip front 20 , and where the side that faces the same way as the slip front 20 forms a step front 23 with the same direction as the slip front 20 .
  • the surface of a conical force ring 25 comprises a force ring front 27 and a sliding surface 29 , 29 ′.
  • the sliding surface 29 , 29 ′ is divided by a force ring recess 30 extending in parallel with the force ring front 27 , and where the side that faces the same way as the force ring front 27 forms a step front 31 with the same direction as the force ring front 27 .
  • a gasket 26 is arranged peripherally between the force ring 21 and first end plate 3 .
  • the pipe wall 19 encloses the plug.
  • a plug is used to seal liquid- or gas-carrying pipes by the plug being inserted into the pipe and propelled by the liquid or gas pressure. It may also be propelled by a built-in driving mechanism and associated wheels for rolling on.
  • the plug is fastened by operation of the hydraulic cylinder 5 of the main section 1 .
  • the end plates 3 , 13 connected to the cylinder 5 are pulled together, and the slips 15 arranged on the periphery of the main section 1 are forced against the conical force ring 25 by the compression face 17 .
  • the slip front 20 and the step front 23 of the slip 15 are pressed against the step front 31 of the force ring 25 and the force ring front 25 respectively, so as to cause the slip to be lifted up onto the sliding surfaces 29 , 29 ′.
  • the slips 15 are pushed along the sliding surfaces 29 , 29 ′ of the force ring 25 until the slips 15 are forced against the pipe wall 16 .
  • the gasket 23 is also compressed and forced outwards, so as to completely seal the pipe together with the first end plate 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Actuator (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Joints Allowing Movement (AREA)
  • Feeding And Controlling Fuel (AREA)
US10/518,763 2002-06-26 2003-06-19 Device for fastening a manoeuvrable plug for plugging of pipes Expired - Lifetime US7124779B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20023099A NO316740B1 (no) 2002-06-26 2002-06-26 Anordning ved en plugg for tetting av vaeske- eller gassforende ror
NO20023099 2002-06-26
PCT/NO2003/000204 WO2004003422A1 (en) 2002-06-26 2003-06-19 Device for fastening a manoeuvrable plug for plugging of pipes

Publications (2)

Publication Number Publication Date
US20050263200A1 US20050263200A1 (en) 2005-12-01
US7124779B2 true US7124779B2 (en) 2006-10-24

Family

ID=19913766

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/518,763 Expired - Lifetime US7124779B2 (en) 2002-06-26 2003-06-19 Device for fastening a manoeuvrable plug for plugging of pipes

Country Status (10)

Country Link
US (1) US7124779B2 (no)
EP (1) EP1552211B1 (no)
CN (1) CN1296651C (no)
AT (1) ATE360173T1 (no)
AU (1) AU2003265012A1 (no)
BR (1) BRPI0312086B1 (no)
DE (1) DE60313348T2 (no)
EA (1) EA006798B1 (no)
NO (1) NO316740B1 (no)
WO (1) WO2004003422A1 (no)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050241710A1 (en) * 2002-02-08 2005-11-03 Ciaran Early Apparatus for pipeline isolation
US20050241475A1 (en) * 2002-06-26 2005-11-03 Harad Syse Arrangement at a hydraulic cylinder on a manoeuvrable plug for plugging of pipes
US20060086086A1 (en) * 2003-12-05 2006-04-27 Harald Syse Hydraulic cylinders and plug with hydraulic cylinder
US20070227604A1 (en) * 2001-11-13 2007-10-04 Harald Syse Plugging system for use during an offshore pipeline laying operation
US20080231001A1 (en) * 2005-08-01 2008-09-25 David Frederick Hawkins Sealing Device
US20080251064A1 (en) * 2007-01-05 2008-10-16 Alberto Bellomo Gas manifold for a cooking range with an emergency tap
US20100051130A1 (en) * 2005-03-21 2010-03-04 Harald Syse Plug With Gripping Means
US20100206578A1 (en) * 2007-05-07 2010-08-19 Jan Noord Sealing Device and Method for Sealing a Casing
US20180119866A1 (en) * 2015-11-20 2018-05-03 Usa Industries, Inc. Gripping apparatus and devices for plugging of pipes, orifices or connecting
US11898941B2 (en) 2016-05-05 2024-02-13 Pipeline Pressure Isolation Group, LLC Pipe engagement and testing system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100404944C (zh) * 2006-01-19 2008-07-23 上海煤气第二管线工程有限公司 管道阻隔引流器
NO327094B1 (no) * 2006-04-12 2009-04-20 Tdw Offshore Services As Plugg med sentraliseringsanordninger
CN103925453B (zh) * 2014-04-03 2016-02-17 天津绿清管道科技股份有限公司 液力锚定封堵器
US10215322B1 (en) * 2017-07-14 2019-02-26 Tallgrass Mlp Operations, Llc Removable oil pipeline branch plug
JP7012623B2 (ja) * 2018-08-30 2022-01-28 東京瓦斯株式会社 管路閉塞用ストッパおよび管路閉塞方法
JP7012624B2 (ja) * 2018-08-30 2022-01-28 東京瓦斯株式会社 管路閉塞用ストッパおよび管路閉塞方法
CN110822211B (zh) * 2019-12-06 2020-06-23 西南石油大学 一种海底管道维抢修智能封隔系统

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607370A (en) * 1948-07-13 1952-08-19 Oscar F Anderson Pipe plug
US2974685A (en) * 1957-08-23 1961-03-14 Williamson Inc T Pipe plug
US3943982A (en) * 1973-08-27 1976-03-16 Compagnie Francaise Des Petroles, S.A. Apparatus for internally checking well pipe bore and for automatically sealing leaks therein
US4332277A (en) * 1980-09-03 1982-06-01 Hughes Undersea Coupling, Inc. Pipeline pigging plug
US4422477A (en) * 1981-02-27 1983-12-27 Hughes Tool Company Pressure energized pipeline plug
US4465104A (en) * 1981-02-27 1984-08-14 Hughes Tool Company Pressure energized pipeline plug
US4498811A (en) * 1982-02-17 1985-02-12 Mcdermott Incorporated Underwater pipeline sealing apparatus
US4602500A (en) * 1985-08-30 1986-07-29 Haskel, Inc. Apparatus for leakage testing of tubes and joints
US4658860A (en) * 1985-03-11 1987-04-21 Reaux James R Pressure set and retrievable vented anchor-seal for pipeline service
US4875615A (en) * 1989-03-06 1989-10-24 Interprovincial Pipe Line Company Vapor plug for temporarily sealing or plugging a pipeline
GB2286868A (en) 1994-02-17 1995-08-30 Stolt Comex Seaway Ltd Pipe plugs
US5797431A (en) * 1995-06-23 1998-08-25 Est Group, Inc. Inner diameter pipe plug
US6241424B1 (en) * 1998-03-17 2001-06-05 Sonsub Inc. Method and apparatus for replacing damaged section of a subsea pipeline without loss of product or entry of seawater
US6581642B1 (en) * 1998-04-17 2003-06-24 Hedley Purvis Limited Pipe testing apparatus
US6732762B2 (en) * 2001-01-12 2004-05-11 Larry R. Russell Pressure-containing plug for a tubular passageway

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607370A (en) * 1948-07-13 1952-08-19 Oscar F Anderson Pipe plug
US2974685A (en) * 1957-08-23 1961-03-14 Williamson Inc T Pipe plug
US3943982A (en) * 1973-08-27 1976-03-16 Compagnie Francaise Des Petroles, S.A. Apparatus for internally checking well pipe bore and for automatically sealing leaks therein
US4332277A (en) * 1980-09-03 1982-06-01 Hughes Undersea Coupling, Inc. Pipeline pigging plug
US4422477A (en) * 1981-02-27 1983-12-27 Hughes Tool Company Pressure energized pipeline plug
US4465104A (en) * 1981-02-27 1984-08-14 Hughes Tool Company Pressure energized pipeline plug
US4498811A (en) * 1982-02-17 1985-02-12 Mcdermott Incorporated Underwater pipeline sealing apparatus
US4658860A (en) * 1985-03-11 1987-04-21 Reaux James R Pressure set and retrievable vented anchor-seal for pipeline service
US4602500A (en) * 1985-08-30 1986-07-29 Haskel, Inc. Apparatus for leakage testing of tubes and joints
US4875615A (en) * 1989-03-06 1989-10-24 Interprovincial Pipe Line Company Vapor plug for temporarily sealing or plugging a pipeline
GB2286868A (en) 1994-02-17 1995-08-30 Stolt Comex Seaway Ltd Pipe plugs
US5797431A (en) * 1995-06-23 1998-08-25 Est Group, Inc. Inner diameter pipe plug
US6241424B1 (en) * 1998-03-17 2001-06-05 Sonsub Inc. Method and apparatus for replacing damaged section of a subsea pipeline without loss of product or entry of seawater
US6581642B1 (en) * 1998-04-17 2003-06-24 Hedley Purvis Limited Pipe testing apparatus
US6732762B2 (en) * 2001-01-12 2004-05-11 Larry R. Russell Pressure-containing plug for a tubular passageway

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070227604A1 (en) * 2001-11-13 2007-10-04 Harald Syse Plugging system for use during an offshore pipeline laying operation
US7766046B2 (en) * 2001-11-13 2010-08-03 Tdw Offshore Services As Plugging system for use during an offshore pipeline laying operation
US20050241710A1 (en) * 2002-02-08 2005-11-03 Ciaran Early Apparatus for pipeline isolation
US20050241475A1 (en) * 2002-06-26 2005-11-03 Harad Syse Arrangement at a hydraulic cylinder on a manoeuvrable plug for plugging of pipes
US20060086086A1 (en) * 2003-12-05 2006-04-27 Harald Syse Hydraulic cylinders and plug with hydraulic cylinder
US7568504B2 (en) * 2003-12-05 2009-08-04 Tdw Offshore Services As Hydraulic cylinders and plug with hydraulic cylinder
US20100051130A1 (en) * 2005-03-21 2010-03-04 Harald Syse Plug With Gripping Means
US8171960B2 (en) 2005-03-21 2012-05-08 Tdw Offshore Services As Plug with gripping means
US20080231001A1 (en) * 2005-08-01 2008-09-25 David Frederick Hawkins Sealing Device
US7640949B2 (en) * 2005-08-01 2010-01-05 David Frederick Hawkins Sealing device
US7634993B2 (en) * 2007-01-05 2009-12-22 Coprecitec, S.L. Gas manifold for a cooking range with an emergency tap
US20080251064A1 (en) * 2007-01-05 2008-10-16 Alberto Bellomo Gas manifold for a cooking range with an emergency tap
US20100206578A1 (en) * 2007-05-07 2010-08-19 Jan Noord Sealing Device and Method for Sealing a Casing
US8857525B2 (en) * 2007-05-07 2014-10-14 Jan Noord Sealing device and method for sealing a casing
US20180119866A1 (en) * 2015-11-20 2018-05-03 Usa Industries, Inc. Gripping apparatus and devices for plugging of pipes, orifices or connecting
US10746339B2 (en) * 2015-11-20 2020-08-18 Usa Industries, Inc. Gripping apparatus and devices for plugging of pipes, orifices or connecting
US11898941B2 (en) 2016-05-05 2024-02-13 Pipeline Pressure Isolation Group, LLC Pipe engagement and testing system

Also Published As

Publication number Publication date
BRPI0312086B1 (pt) 2016-01-26
NO20023099L (no) 2003-12-29
NO20023099D0 (no) 2002-06-26
EP1552211A1 (en) 2005-07-13
ATE360173T1 (de) 2007-05-15
EA006798B1 (ru) 2006-04-28
DE60313348D1 (de) 2007-05-31
WO2004003422A1 (en) 2004-01-08
NO316740B1 (no) 2004-04-19
AU2003265012A1 (en) 2004-01-19
BR0312086A (pt) 2005-03-22
CN1296651C (zh) 2007-01-24
US20050263200A1 (en) 2005-12-01
DE60313348T2 (de) 2008-01-03
EA200500016A1 (ru) 2005-10-27
CN1662767A (zh) 2005-08-31
EP1552211B1 (en) 2007-04-18

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